Resetting device for heat-coils.



l P.' R. GHAPIN. I RBSETTING DEVICE FOB. lHEAT COILS'.

AP'PLIOATION FILED 1153.23, 1907. l Patented fApr.'v 22, 14913,.

Ililll :uNIIEDy sini TES PATENTOEFICE;

FEEDEEICII E. oIIArIN, .Or DETROIT, -ivIICHI'GAJsL AssIeNoE'moWEs'rEEN ELECTRIC COMPANY, 'or CHICAGO, ILLINOIS, A CORPORATION OE ILLINOIS,

- VEESETTING' DEVICE EOE IIEAZLMCOILS.r

To'aZZ whom imag-concern.:

. v- Be it lmown that I, FREDERICK R. C-IIAPIN,

' citi/.enofthe United-States, residing A -Detroit, in the county of Wayne and State of Michigan, have invented .a certain new and 1 useful Improvement in Resetting Devices forIIeat-Coils, of which the following is a full, clear, concise, and exact description.

My invention'relates to a resetting device yfor electro-thermal projections, as used more 'particularly ini telephony, and has for its object to provide; improved and -'simple means for automaticallyA restoring a protector from its operated to its normal con-v dition-that is, vfor resetting the protector-I Y upon the application of heat thereto.

In carrying out my invention, Il preferably provide a holder comprising a pair of supporting members adapted to receive a thermal protector, such as a'heat coil, which" has been operated, and Which'has an oper- Y'- ating part rigidly secured in a displaced position due to. the operation of the device. l

hleansis provided in association with said supporting members for rsstoring -the displaced part to normal position upon the application of heat to the coil and as shown in the drawings such means may comprise a spring-actuated grip in,`f: g'device adapted to grasp the displaced)'part' of said heat coil and serve, together with the holder, as a-means for conducting` current through the coil to heat the saine, whereupon the said operating part is freed. The gripping device, after t-he operating part is free, movesthes'aid part intov its normal or operating position, and contactsf Controlling the circuit connections of the coil are opened, said' contacts being preferably controlled by v"said spring-actuated gripping device, I

also may provide means for limiting the return movement of the operating part, such,I

for example, as a, gaging device carriedby the holder and arranged to part.,

' I willdescribe my invention by reference to the accompanying drawing, which fil-lus?7 preferred form thereof, reserving,

trates the however, for the appended claims a state- Specification of Letters Patent.

stop the' return ment of the parts, improvements and combinations which I consider lnovel with me.

In the draWings, Figure 1 is a plan view i 'Patented Apr, 22, 1913.-. Application filed March 23, 1907. l Serial No. 364,078.' l

of a resetting device embodying my inven tion; Fig. 2 is a View in side velevation thereof; and Fig. 3 is an enlarged view, partly in section -on line 3 3 of Fig. 1,7show1ng a 4 heat coil in positionto be reset; and Fig.-

.4" S a fragmentary sectional view onthe line f--ll ofFig; 3.-

The same, letters shoWn.`

The heat coil aawith'whieh I have chosen to illustratemy invention, is of the .noiireversible type, and is provided With a pin a1 `secured at 'one end of theframe ofthe coil, and carrying a sleeve a? secured to the vpin al by solder, around which is placed av coil of Wire a3 Which is connected with vthe terminal at' of the coil and Withthe sleevel -free end', as is Wellknovvn;l and in practice,v

. 60 of reference are used to designate the same'partsvvherever theyare when a heavy 'current is applied to the'heat coil, the pressure of the supporting -spring of the protector'mounting causes the sleeve .A c", in a manner Well known in the art, to

move toward 4the fixed end of pin al, when the solder ismelted, and thc pin al is forced into positionto close a circuitin the usual Way. j v- By means of my invention, the sleeve a2 of a heat coil which has operated may quickly. and easily restored tonormalfposition. I provide coil, 'said holder comprising an insulated spring?)1 adapted' to engage the terminal plate a* of the With the readily receive the .end of pin'al.

--.Sp'ring actuating mechanism 'isi provided adapted to-bo placed under V.tension 1to graspl the a holder I) .for the operated heat coil, andan insulated post- 52 carrying a cup g; adapted 4to support I The cup` g issecured portionv of b1 which engages`the terminal' said-cup being open, at the side as is clearl from Fig. 4,) to more' 45 hol er and apply current tothe same, where' sleevega2 and slide-fthe same .along the pin 'at one en d on "the .a1 when current isfappliedto the coil a8 to .line with the sleeve a2 a pair of springactuated gripping jaws d d, adapted to gras the same, and serving; when .the solder lfoldlng the sleeve a2 to the in a1 has been melted by the application o current to the,

coil,'t0 pull' the sleeve outwardly to itsnormal position. v

A4- pair V'of contacts control the circuit connections of the heat coil, and are arran ed to be opened when the sleeve has reac ed 'its normal operating position. These'. contacts may be .o eratedj by the spring c and may referably comprise a lspring finger e carrie by said spring c, and having a contact anvil e1 carried by the post b2 and insulated therefrom, 'and eleci tricallyi connected with a terminal plate f.

It will thus be `seen that the circuit of the' heat coil leads from vthespring b1 through the' coil as to the sleeve a2, jaws d Z and spring c, through contacts e e1, to thetterminal plate f.

l'so

which receives and supports the pin The outward pun of the jaws" di] upon the sleeve a* is limited or gaged by e cup g, a1, the

actin as a stop for said as reac ed the normal'posirim ofsaid cu sleeve when atY tion, and since the heat generatin l circuit has been o ed at contacts e an e1, the

' solder h ar ens and again fixes the sleeve a2 to the pin .in itsnormal position. I thus provide ran accurate means for maintainmg uniform the distance between the free end of the set coils. It will be apparent that other types of coils than the one shown may be' reset by and the current cut ofwhen' the sleeve has been restored to its normal-posit1on.

means of my invention.- By mydevice. it 1s sim ly necessary to insert a 0011V inthe vupon theco will be' automatically 'reset I claim:

1. .A .e001 "for resetting 'laavly "dis:-

placed parts of airoperatedj" ermalprotector comprisin supporting members for said '-protector, an means for restoring the nor- 55. tion of heatA thereto.-

.malrelation of said parts .-upon the applica- Ay tool for resetting a displacedpart eineny o rated thermal' protector comprising il 'der for said protector, and a s ringactuat'ed device' adapted to grip sai die vplaced'part and restore the same upon Athe application of heat to said rotector.

. .A tool for' resetting a dlsplacedpart of pin a1 and the sleeve a? in all re- ,ailiolder fortheproteetor, and a -tension dereturned to normal position', said-holder and. tension device convey' g the current to release said displaced part-521? i I f 4. A tool for reestablsling the yinitial relation between two soldered rigid arts of a thermal protector, comprising a ho der for said protector, spring-actuated means for causing arelative Amovement of said parts, said holder and 'spring-actuated means serving to conduct current to said protector to release4 said arts.,

5. A tool or resetting a displaced part of an operated thermal protector oomprlsing a holder for the protector, means for supplying current to said protector to release sald displaced part, tension devices for causing the vdisplaced part to be restored to norma position, and contacts in the path of said current opened when the displaced part 1s operated. l

'6. A1 tool for 'resetting a soldered displaced part forming one terminal 'of a therporting the other terminal, a pa1r of springactuated jaws adapted to engage 4`said disthe reicase of. said w part to restore thev same to normal.

` 7.'A tool for resettinga soldered,l displaced part forming one terminal of a; thermal protector a spring engaging and sup-f placed part and completey the circuit-connections of said protector, and adapted'upon w mal protector, comprising a' pair .of springactuated gripping' jaws for engaging said displaced part, a springfsupportingthe other terminalof said rotector, a source ofcurrentconnected with 'said spring and-jaws,

tor, means for releasing said displaced clementg-aagtfension device for restoring said ing the return movement of said displaced -element`. Y 9. A toolfor resettinga heat coil.,hav ing displaced. element, and gaging means limit" axillfor 'ra-.atingv `essaierai dislacedelementof. a thermal protector,com,

prisingmeans foresupporting said protec an axial pin and a sleeve fused thereto vina :if displaced. position, comprisin a su port for one end of -said pin, a cup-s ape for the other endof said pin, and atension 'device adapted to engage said displaced sleeve, a circuit` for supplying current to Support said coil to release said s eeve"to permit 'y "'sldtension 4device to move it along said pin into engagement with said cup when. said circ it is opened.

1f A tool for resetting' 'a heat'coil-having a sleeve soldered in a displaced posi- In witness whereof, I, .hereunto subscribe tipn: to an axial pin, a supprt for thJ end my name this 4th day of March A. D., 1907.

o said pin, s rm -actuate jaws a a te to grip said sleleve nd draw the same along FRED* R CHAPIN' 5 said pin upon the application of heat to Witnesses:

said coil, said cup limiting the return move- F. B. SAUNDERS,

ment of said sleeve upon said pin. l E. C. LASKEY.

Copies of thibpatent may be obtained for ve cents each, by aidressing the Commissioner of Patents,

i Washington, D. C. 

